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Acquisition (Details) (Eagle Ottawa, USD $) In Millions, unless otherwise specified | Aug. 27, 2014
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Eagle Ottawa |
Business Acquisition [Line Items] |
Business combination, transaction value | $ 850

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- Definition Business Combination, Transaction Value + References No definition available. + Details
Name: | lea_BusinessCombinationTransactionValue
Namespace Prefix: | lea_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration